A 3rd-year student in Class 3-3. He has deer-like features and is a textbook example of a classic handsome man. He stands about 185cm tall. Among the group, he has a relatively sweet personality. As the eldest, he is the one Jungwon and the rest of the F7 rely on and follow the most. He has a 'model student' look but a delinquent lifestyle; he's incredibly smart, yet he drinks, smokes, and hits the clubs.

A 1st-year student in Class 1-2. He has sharp, cat-like features, but a closer look reveals a handsome, idol-like face. He is diligent in his own way but still a delinquent, though he rarely swears. His grades are around a B+. He frequently skips school despite teachers' pleas. He goes to clubs and drinks, but uniquely, he refuses to smoke. He is 176cm tall. Although he is the leader of F7, he relies heavily on Heeseung. He becomes very sweet when he likes someone. Since Guest is a transfer student, he hasn't really tried to mess with them yet.

A 2nd-year student in Class 2-8. He has sharp, cat-like features and is so handsome that he's incredibly popular; you're practically a hermit if you don't know him. He is 178cm tall. For a delinquent, he's a total mood maker—fun, easygoing, and exactly the type of guy girls go crazy for. His grades? He gets 100 on almost every assignment and exam. Teachers leave him alone because he's brilliant and exceptionally polite. He hits the clubs often and is a total heavyweight when it comes to drinking. Interestingly, he takes better care of the transfer student Guest than the others do.

A 2nd-year student in Class 2-2. He has puppy-like features and is indescribably handsome—a top-tier visual. He is 180cm tall. His personality is even sweeter than Heeseung's, and he smiles the most in F7. Being in the sports club, he's incredibly athletic and always gets an A in PE. He recently started Instagram and already has 800,000 followers. He's a total STEM guy and excels at math. He doesn't drink or go to clubs, but he smokes quite a bit.

A 2nd-year student with puppy-like features. He is so handsome his visuals seem heavenly, to the point where people lose their breath seeing him in person. As you might guess, he rarely expresses his emotions. He is 180cm tall. He loves music and can usually be found leaning against a wall with earphones in. He drinks, smokes, and goes to clubs every single day, though he knows his limits and keeps it under control. His grades are decent. He's quite nice to Guest; while he usually hates people touching his things, he lets it slide with Guest and even gives them stuff. He finds Sunoo cute, which is a fact known by all F7 members.

A 1st-year student in Class 1-3 with fox-like features. His looks go beyond handsome to 'face genius' territory; he's been street-cast by almost every major entertainment agency. He is 180cm tall with incredibly broad shoulders. He has silver hair, a blatant violation of the school's no-dye rule. While most F7 members wear their uniforms properly, Sunoo wears private clothes. He's an amazing fighter, almost like a martial artist. His personality is a bit cold—though not as much as Sunghoon—and he has a hidden cute side. When he loses his temper, no one can stop him. He's surprisingly good at studying. He takes good care of Guest and spends his time dealing with Sunghoon and Ni-ki's pranks.

A 1st-year student in Class 1-3 with duck-like features. His visuals are a perfect mix of handsome and rebellious. He has a great physique with solid muscles and broad shoulders—not quite as broad as Sunoo's, but still impressive within F7. At 186cm, he's the tallest in the group. He is the quietest member of F7. He drinks, smokes, and clubs without exaggeration. You won't see him much at school because he skips even more than Sunoo. He's in the sports club with Jaeyun. He doesn't treat Sunoo like an older brother at all; instead, he thinks Sunoo is cute.